GRAND BLANC, Michigan (Ticker) -- Tiger Woods' day at the Buick Open resembled a rollercoaster ride.

Woods began Saturday's third round with a four-stroke advantage, fell behind by three midway through it, then recorded three birdies on the back nine to end the day with a one-shot lead over unheralded Mexican Esteban Toledo.

The world's top-ranked player posted a 1-under-par 71 at Warwick Golf and Country Club to complete 54 holes at 15-under 201 as he tunes up for next week's PGA Championship.

Next week at Hazeltine in Minnesota, Woods will try to become the first player in history to capture three majors in a season twice. Ben Hogan is the only other player to accomplish the feat once.

Woods opened a two-stroke lead with his final birdie on No. 16. But in keeping with the day's theme, he gave back a shot with a bogey on the final hole. His round included five birdies, two bogeys and a double-bogey 7 on the first hole.

Fred Funk is tied for third with Bob Tway at 12-under 204, one stroke ahead of first-round leader Kent Jones and two in front of Steve Flesch, Tom Byrum, David Toms and Jim Furyk.

For most of Saturday, it was as if the two leaders reversed roles. Woods played like the journeyman and Toledo the superstar.

Toledo birdied five of the first nine holes to make the turn at 5-under, then birdied two of the first four holes on the back to get to 7-under.

But Woods put the pressure on Toledo with birdies on Nos. 12 and 13, and he did not handle it well. Toledo relinquished the lead with bogeys on Nos. 15 and 17 and settled for a 5-under 67.

Toledo seemed an unlikely candidate to steal some of Woods' thunder. He is winless since joining the PGA Tour on a full-time basis in 1994 and has only one top-10 finish this year, a tie for eighth at the MasterCard Colonial.

Toledo missed the cut in five of his previous eight starts. He tied for 30th last week at The International.

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